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Duy PhạmDuy Phạm
Duy Phạm
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Duy Phạm
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Add unit test for W3WRectangle id generator
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‎lib-compose/src/test/java/com/what3words/map/components/compose/extensions/W3WRectangleIdTest.kt‎

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package com.what3words.map.components.compose.extensions
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import com.what3words.components.compose.maps.extensions.id
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import com.what3words.core.types.geometry.W3WCoordinates
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import com.what3words.core.types.geometry.W3WRectangle
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import org.junit.Assert.assertEquals
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import org.junit.Assert.assertNotEquals
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import org.junit.Test
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class W3WRectangleIdTest {
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@Test
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fun `should generate unique IDs for different rectangles`() {
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val rect1 = W3WRectangle(
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southwest = W3WCoordinates(10.780078, 106.705424),
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northeast = W3WCoordinates(10.780105, 106.705451)
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)
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val rect2 = W3WRectangle(
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southwest = W3WCoordinates(10.780590, 106.705424),
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northeast = W3WCoordinates(10.780617, 106.705451)
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)
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val id1 = rect1.id
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val id2 = rect2.id
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assertNotEquals("Different rectangles should have different IDs", id1, id2)
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}
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@Test
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fun `should generate same ID for identical rectangles`() {
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val rect1 = W3WRectangle(
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southwest = W3WCoordinates(10.780078, 106.705424),
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northeast = W3WCoordinates(10.780105, 106.705451)
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)
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val rect2 = W3WRectangle(
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southwest = W3WCoordinates(10.780078, 106.705424),
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northeast = W3WCoordinates(10.780105, 106.705451)
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)
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val id1 = rect1.id
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val id2 = rect2.id
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assertEquals("Identical rectangles should have the same ID", id1, id2)
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}
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@Test
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fun `should generate different IDs for previously colliding rectangles - case 1`() {
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// These two rectangles previously generated the same ID: 9222864837722059307
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val rect1 = W3WRectangle(
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southwest = W3WCoordinates(10.780078, 106.705424),
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northeast = W3WCoordinates(10.780105, 106.705451)
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)
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val rect2 = W3WRectangle(
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southwest = W3WCoordinates(10.780590, 106.705424),
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northeast = W3WCoordinates(10.780617, 106.705451)
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)
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val id1 = rect1.id
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val id2 = rect2.id
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assertNotEquals("Previously colliding rectangles (case 1) should now have different IDs", id1, id2)
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}
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@Test
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fun `should generate different IDs for previously colliding rectangles - case 2`() {
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// These two rectangles previously generated the same ID: 9214139332489523810
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val rect1 = W3WRectangle(
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southwest = W3WCoordinates(10.780051, 106.705479),
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northeast = W3WCoordinates(10.780078, 106.705506)
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)
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val rect2 = W3WRectangle(
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southwest = W3WCoordinates(10.780563, 106.705479),
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northeast = W3WCoordinates(10.780590, 106.705506)
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)
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val id1 = rect1.id
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val id2 = rect2.id
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assertNotEquals("Previously colliding rectangles (case 2) should now have different IDs", id1, id2)
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}
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@Test
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fun `should generate different IDs for rectangles with very small coordinate differences`() {
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val rect1 = W3WRectangle(
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southwest = W3WCoordinates(54.672341, 89.467876),
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northeast = W3WCoordinates(54.672351, 89.467886)
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)
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val rect2 = W3WRectangle(
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southwest = W3WCoordinates(54.672342, 89.467875),
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northeast = W3WCoordinates(54.672352, 89.467885)
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)
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val id1 = rect1.id
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val id2 = rect2.id
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assertNotEquals("Rectangles with micro-degree differences should have different IDs", id1, id2)
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}
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@Test
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fun `should generate different IDs when sw and ne are swapped`() {
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val rect1 = W3WRectangle(
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southwest = W3WCoordinates(10.0, 100.0),
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northeast = W3WCoordinates(10.001, 100.001)
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)
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val rect2 = W3WRectangle(
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southwest = W3WCoordinates(10.001, 100.001),
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northeast = W3WCoordinates(10.0, 100.0)
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)
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val id1 = rect1.id
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val id2 = rect2.id
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assertNotEquals("Swapped coordinates should produce different IDs", id1, id2)
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}
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@Test
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fun `should generate different IDs for adjacent grid squares`() {
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// Simulating adjacent w3w grid squares (3m x 3m approximately)
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val rect1 = W3WRectangle(
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southwest = W3WCoordinates(51.520847, -0.195521),
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northeast = W3WCoordinates(51.520870, -0.195497)
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)
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val rect2 = W3WRectangle(
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southwest = W3WCoordinates(51.520870, -0.195521),
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northeast = W3WCoordinates(51.520893, -0.195497)
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)
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val id1 = rect1.id
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val id2 = rect2.id
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assertNotEquals("Adjacent grid squares should have different IDs", id1, id2)
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}
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@Test(expected = IllegalArgumentException::class)
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fun `should throw exception for invalid latitude above range`() {
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val rect = W3WRectangle(
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southwest = W3WCoordinates(91.0, 100.0),
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northeast = W3WCoordinates(10.0, 100.0)
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)
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rect.id
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}
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@Test(expected = IllegalArgumentException::class)
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fun `should throw exception for invalid latitude below range`() {
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val rect = W3WRectangle(
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southwest = W3WCoordinates(-91.0, 100.0),
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northeast = W3WCoordinates(10.0, 100.0)
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)
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rect.id
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}
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@Test(expected = IllegalArgumentException::class)
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fun `should throw exception for invalid longitude above range`() {
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val rect = W3WRectangle(
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southwest = W3WCoordinates(10.0, 181.0),
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northeast = W3WCoordinates(10.0, 100.0)
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)
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rect.id
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}
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@Test(expected = IllegalArgumentException::class)
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fun `should throw exception for invalid longitude below range`() {
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val rect = W3WRectangle(
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southwest = W3WCoordinates(10.0, -181.0),
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northeast = W3WCoordinates(10.0, 100.0)
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)
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rect.id
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}
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@Test
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fun `should generate consistent IDs across multiple calls`() {
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val rect = W3WRectangle(
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southwest = W3WCoordinates(10.780078, 106.705424),
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northeast = W3WCoordinates(10.780105, 106.705451)
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)
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val ids = (1..100).map { rect.id }
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val uniqueIds = ids.toSet()
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assertEquals("ID should be consistent across multiple calls", 1, uniqueIds.size)
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}
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@Test
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fun `should generate unique IDs for large batch of random rectangles`() {
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val rectangles = (1..1000).map { index ->
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val lat = -90.0 + (index % 180) + (index * 0.000001)
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val lng = -180.0 + (index % 360) + (index * 0.000001)
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W3WRectangle(
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southwest = W3WCoordinates(lat, lng),
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northeast = W3WCoordinates(lat + 0.00003, lng + 0.00003)
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)
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}
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val ids = rectangles.map { it.id }
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val uniqueIds = ids.toSet()
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assertEquals("All ${rectangles.size} rectangles should have unique IDs", rectangles.size, uniqueIds.size)
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}
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}

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